B1945-11

B1945-11-POWER LIFTGATE PINCH SENSOR 2 - CIRCUIT SHORT TO GROUND





For a complete wiring diagram, refer to the Wiring Information.

Theory of Operation

The right pinch sensor provides two functions. It is not only a pinch sensor but is also the Power Liftgate Temperature Sensor.

- When Monitored:
Whenever the Power Liftgate Module is awake.

- Set Condition:
The Power Liftgate Module has detected the Right Liftgate Pinch Sensor circuit voltage is under 0.22 of a volt for over 20 seconds.





1.

NOTE: The vehicle should be at room temperature when this test is performed.
DTC PRESENT
1. With the scan tool, record and erase the DTCs and any liftgate inhibitors.
2. Turn the ignition off, wait 20 seconds, then turn the ignition on.
3. Be sure the liftgate is closed.
4. Open and close the liftgate several times.
5. With the scan tool, read the Active DTCs.

Does the scan tool display; B1945-11-POWER LIFTGATE PINCH SENSOR 2 - CIRCUIT SHORT TO GROUND?

Yes

- Go To 2

No

- Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals and correct pin tension.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

2. RIGHT LIFTGATE PINCH SENSOR SHORTED




1. Disconnect the Right Liftgate Pinch Sensor harness connector.
2. Erase the DTCs.
3. Turn the ignition off, wait 10 seconds, then turn the ignition on.
4. With the scan tool, read the Active DTCs.

Does the scan tool display; B1945-11-POWER LIFTGATE PINCH SENSOR 2 - CIRCUIT SHORT TO GROUND?

Yes

- Go To 3

No

- Replace the Right Liftgate Pinch Sensor. Pinch Sensor - Removal.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

3. (Q78) RIGHT PINCH SENSOR SIGNAL CIRCUIT SHORTED TO GROUND




1. Turn the ignition off.
2. Disconnect the Power Liftgate Module C2 harness connector.
3. Measure the resistance between ground and the (Q78) Right Pinch Sensor Signal circuit.

Is the resistance below 20K Ohms?

Yes

- Repair the (Q78) Right Pinch Sensor Signal circuit for a short to ground.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 4

4. (Q78) RIGHT PINCH SENSOR SIGNAL CIRCUIT SHORTED TO THE (Q901) LOGIC GROUND CIRCUIT




1. Measure the resistance between the (Q78) Right Pinch Sensor Signal circuit and the (Q901) Logic Ground circuit.

Is the resistance below 20K Ohms?

Yes

- Repair the (Q78) Right Pinch Sensor Signal circuit for a short to the (Q901) Logic ground.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Replace the Power Liftgate Module. Power Liftgate Control Module - Removal.
- Perform the BODY VERIFICATION TEST. Body Verification Test.